public class demo5 {
    public static void main(String[] args) {
        Thread t = new Thread(() -> {
           while(true){
               System.out.println("hello t");
               try{
                   Thread.sleep(1000);
               } catch (InterruptedException e) {
                   e.printStackTrace();
               }
           }
        });

        t.start();

        while(true){
            System.out.println("hello main");
            try{
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
